s71ws256nc0bawa30 Meet Spansion Inc., s71ws256nc0bawa30 Datasheet - Page 34

• Manufacturer Part Number: s71ws256nc0bawa30
• Description: Stacked Multi-chip Product Mcp 256/512/128 Megabit 32m/16m/8m X 16 Bit Cmos 1.8 Volt-only Simultaneous Read/write, Burst-mode Flash Memory With 128/64megabit 8m/4m X 16-bit Psram.
• Manufacturer: Meet Spansion Inc.

10.4
32
Autoselect
The Autoselect is used for manufacturer ID, Device identification, and sector protection informa-
tion. This mode is primarily intended for programming equipment to automatically match a device
with its corresponding programming algorithm. The Autoselect codes can also be accessed in-sys-
tem. When verifying sector protection, the sector address must appear on the appropriate highest
order address bits (see
icant four bits of the address during the third write cycle selects the bank from which the
Autoselect codes are read by the host. All other banks can be accessed normally for data read
without exiting the Autoselect mode.
See
Manufacturer ID
Device ID, Word 1
Device ID, Word 2
Device ID, Word 3
Indicator Bits
(See
Sector Block Lock/
Unlock
Note: For WS128N and WS064, DQ1 and DQ0 are reserved.
To access the Autoselect codes, the host system must issue the Autoselect command.
The Autoselect command sequence may be written to an address within a bank that is either
in the read or erase-suspend-read mode.
The Autoselect command may not be written while the device is actively programming or
erasing. Autoselect does not support simultaneous operations or burst mode.
The system must write the reset command to return to the read mode (or erase-suspend-
read mode if the bank was previously in Erase Suspend).
Table 15.1
Description
Autoselect Command
Note)
Unlock Cycle 1
Unlock Cycle 2
Cycle
for command sequence details.
(BA) + 00h
(BA) + 01h
(BA) + 0Eh
(BA) + 0Fh
(BA) + 03h
(SA) + 02h
Address
Table 10.10 Autoselect Addresses
Table
A d v a n c e
S71WS-Nx0 Based MCPs
10.10). The remaining address bits are don't care. The most signif-
Operation
0001h
227Eh
2230 (WS256N)
2231 (WS128N)
2200
DQ15 - DQ8 = Reserved
DQ7 (Factory Lock Bit): 1 = Locked, 0 = Not Locked
DQ6 (Customer Lock Bit): 1 = Locked, 0 = Not Locked
DQ5 (Handshake Bit): 1 = Reserved, 0 = Standard Handshake
DQ4, DQ3 (WP# Protection Boot Code): 00 = WP# Protects both Top Boot and
Bottom Boot Sectors. 01, 10, 11 = Reserved
DQ2 = Reserved
DQ1 (DYB Power up State [Lock Register DQ4]): 1 = Unlocked (user option),
0 = Locked (default)
DQ0 (PPB Eraseability [Lock Register DQ3]): 1 = Erase allowed,
0 = Erase disabled
0001h = Locked, 0000h = Unlocked
Write
Write
Write
(LLD Function = lld_AutoselectEntryCmd)
Table 10.11 Autoselect Entry
Byte Address
BAxAAAh
BAxAAAh
BAx555h
I n f o r m a t i o n
Word Address
BAx555h
BAx2AAh
BAx555h
Read Data
S71WS-N_01_A4 September 15, 2005
0x00AAh
0x0055h
0x0090h
Data